“We’ve known about it for some time and, obviously, we’ve been dealing with it,” Fisher told the St. Louis Post-Dispatch. “First and foremost, we’re very, very disappointed in his choices and his decisions. It’s selfish, it hurts the team, but we also see it as an opportunity to learn from a mistake.

“We discussed it with the entire squad last night and I think everybody understands the responsibility that each and every player has as far as taking care of himself and what you can do and what you can’t do. It’s behind us now.”

Dunbar is allowed to participate in preseason work, but will miss games against Arizona, Atlanta, Dallas and San Francisco.

In preparation, Will Witherspoon, signed to a one-year deal, is with the first team alongside linebackers James Laurinaitis and rookie Alec Ogletree. Dunbar was second on the team in tackles last year with 157 and Witherspoon, in his 12th season, would have big shoes to fill.